3 years ago

What will be evidence of a galaxy moving toward earth?

2 answers:

3 0

None of the choices is correct. Choice 'd' has a grain of truth, but just a grain, and it's still sadly unclear on the concept.

If a star or galaxy is moving toward Earth, then the wavelengths of the radiation coming from it are shorter than they SHOULD BE, but they're not becoming shorter.

The real trick to measuring what's really going on is in knowing what the wavelengths SHOULD be.

kotegsom [21]3 years ago

3 0

D.
Since we see light different based on their wavelength.
Blue for short, Red for long.

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